I 2nd an Octave integrated. Heard one in the C60 and it was really good. on paper probably shouldn’t work that well but sounds fantastic.
I have personally used a Cayin A100T on a pair of Focus 140 and it was not very good sounded really bland. An Odyssey Stratos plus in the same speakers was really good.
Also have had a Lyngdorf 2170 on some C20s and it ran out of gas. It was fantastic on more efficient speakers.